Citazione APA

Kotler, P. (1991). Principles of marketing/ 5e (5th ed.). Prentice hall of India.

Stile di citazione Chicago

Kotler, Philip. Principles of Marketing/ 5e. 5th ed. New Delhi: Prentice hall of India, 1991.

Citazione MLA

Kotler, Philip. Principles of Marketing/ 5e. 5th ed. Prentice hall of India, 1991.